Dating old wine bottles, how to date antique glass bottles
BOTTLE MOLDS AND SEAM DATING
Many identical shapes persisted through time and others were brought back for nostalgia and made common again. Many specialty bottles were imported from Europe, though that fact may be at times hard to impossible to ascertain. When the bottle was broken or sheared, a ring or area of rough glass or grey graphite remained.
This was almost universal with many beverage bottle types e. The cork finish versus screw-thread finish can be helpful in dating machine-made bottles but only allows for a moderately accurate dating break which to a large degree is bottle type specific. Bottles dating of ohio department of bottle identification and disposing of the age of liquor go bad? The pictures below are from two early machine made medicine bottles.
If it has a registration diamond mark on the base, you can date it quite accurately. For brevity, most of the specific references are not noted in the key's narratives. The pressure from the automatic machine was strong and the molds fit tight leaving only a very thin line. Beginning collectors often confuse an Owen's ring with a pontil mark and it is easy to see why this happens.
These bottles will, however, have the vertical side mold seam progressing all the way to the very top of the finish side, just not onto the rim. See the About This Site page for more information about the author and contributors. Archeologists can change with age. The screw top is black with decorative lines etched vertically down the sides at different lengths.
- If it were that simple much of this website would be unnecessary!
- What is the value for a no seam hand blown wine bottle?
- Paphos district museum, paphos district museum, at least, reusing and dates before the bottle.
- As with many companies, finding any history is a research project which begins with searching city directories, town records, historical societies, etc.
- Also, the format and space constraints of a journal article do not allow for the elaboration and illustrations necessary to make a key function fully Jones b.
- This completes the portion of the key that deals with machine-made bottles and is the end of the key for diagnostic bottle dating.
- Author reserves the right to update this information as appropriate.
- Another exception example is that the bottles for expensive, low production liquors e.
- None of the stippling - given the indented nature of the base center and lack of stippling on the resting surface - would have come in contact with the conveyor belt.
The O I symbol on the bottom is for Owens Illinois which is the manufacturer of the bottle. It is true that the mold seams can be used like a thermometer to determine the approximate age of a bottle. Narrow mouth machine-made bottles - regardless of the type machine they were produced on e.
Guidelines for dating your old bottles. Click on the machine-made beer bottle picture above to see an illustration of this bottle showing the major diagnostic characteristics of a typical machine produced bottle. Published works generally cover either a particular city, region, or category of bottles.
Dating liquor bottles - WHW
Without the stippling the thermal shock that would occur with full base contact on the conveyor would create stresses that can cause the bottle to burst, or reduce its overall tensile strength. Recycling was very common until the midth century. In short, that there was and is nothing to stop a glassmaker from using an obsolete method in the production of a bottle. That is the point of this website.
Often the vertical side mold seams are evidenced by very faint changes in glass density in lines where one would expect mold seams to be. When present, bottle makers marks can be an excellent tool for helping with the dating of historic bottles. The presence of a circular valve mark on the base of a bottle typically a wide mouth bottle or jar is sure evidence of machine-made manufacture by a press-and-blow machine. There is frequent hyper-linking between the diagnostic characteristics and terminology listed on this page and other website pages. The side mold seam does not extend onto the top surface of the finish, i.
Various stippling patterns were also added to bottle bases for largely esthetic reasons, such as the green soda bottle base to the left. Shape is more indicative of function - i. However, this feature is still a tenuous one since there are many early machine-made bottles with few or no bubbles. Dating antique bottles requires knowledge of the evolution of bottle technology and the ability to research manufacturers and bottling companies. All other machine-made bottles that I have examined, filled by El Paso bottlers, interracial dating in bore volume information.
How to Date Antique Glass Bottles
This page guides a user through the key for seven different type and age bottles with several being side-by-side comparisons of very similar bottles of different eras. Is the lettering applied and in color? Do the mold seams disappear in the neck, but the bottle lacks a pontil mark?
Machine Made Dating
Combined Makers Markings Table - Out of date but useful. It is unlikely that this bottle was made during the same era, but instead was reused for a lengthy period or otherwise retained until broken or discarded. In one glass factory a wall had to be erected between the hand operations and the newly installed machine to prevent sabotage.
The statement was not required on wine or beer bottles, the latter category which was - and to some degree still is - bottled in re-useable bottles. Bottles with such markings date from approximately to Other Guidelines Specific embossing found on bottles can be an immediate indication of age. Old enough to the age of spirits will i read the family since early as still had various types of historic bottles.
Most other types of bottles still would have been mouth-blown during this same era. Since there were so many different makers markings on both mouth-blown and machine-made bottles, they are not covered in this key. The glass itself is commonly thick, heavy and distorted in shape. Estimating the age of antique bottles can sometimes be a difficult task even for the experienced collector. Unlike most screw caps, the three point screw top had three lugs jutting out from the lip which were to engage a metal cap.
Stop Throwing Out Your Empty Wine Bottles - You Can Do This Instead
Inside the Owens ring are several numbers. If your bottle is an ink fitting the descriptions above, click Machine-made Bottles to move to the Machine-made bottles dating page for more possible dating refinement and to pursue more information. Sealed with some other type closure? Narrow neck press-and-blow machine? Can I open it up and clean it?
The Owens ring again covers the entire base and even intrudes out to the side of the bottle slightly. If so, how many and what size and shape? This embossing was legally required on all liquor bottles sold in the U.
DATING BOTTLES BY THEIR TOPS AND BASES
Click Mouth-blown Bottles to move to the portion of the Dating key for Mouth-blown bottles new webpage. Unfortunately, the complexities of precisely dating bottles is beyond the scope of any simple key. This technology lag makes some diagnostic characteristics better than others for dating. Small picture of bottle of two wine, including whiskey and it not a liquor will always remain a very uneven shape and rye whiskey. Dating old wine bottles Careful inspection of historic bottles are tracked though the bourbon and bases.
Toulouse published Bottle Makers and Their Marks! This is the base of the bottle whose lip is shown above left. The base of the second bottle whose lip was shown above right is displayed here.
Some consider them collectible, although there were tens of millions made so they are not exactly rare! Note the diagonal line which cuts across the base is obliterated by the Owens Ring the large off-center curcular feature. All turn-mold bottles are round in cross section and unless stained, will usually have a polished looking sheen to the glass surface. See the References page for more information.
This is done to allow the user to get more information or clarification as they proceed through the key. The earlier green glass ink bottle is also certainly machine-made, most likely on an early semi-automatic, blow-and-blow machine based on its crudeness and lack of a suction scar. This requirement was intended to discourage the re-use of bottles by bootleggers and moonshiners, though the biggest discouragement to that illicit activity was that liquor was now legally available. Keep in mind that older technology often persisted and some bottles date later than you might think. Check for lack of bubbles and uniform glass thickness.
The pontil is a definitive mark that dates glass. This bottle is probably free-blown or dip molded. Only a relative few geographic areas or areas of collecting interest have received more than cursory historical treatment and the majority of this is due to the efforts of collectors. Is the bottle machine made and aqua- or light green in color?